1. Deep liquid flow cultivation: the nutrient solution layer is deep, and the roots extend in the deep liquid layer, so each plant occupies more liquid, so the concentration, dissolved oxygen, pH, temperature and water storage of the nutrient solution are not easy to change sharply, providing a stable growth environment for the roots.

2. Nutrient solution film cultivation: it is a hydroponic method of planting plants in shallow nutrient solution. Because the liquid layer is shallow, one part of crop roots is immersed in shallow flowing nutrient solution, and the other part is exposed to the water in the planting tank, which can better solve the problem of root aerobic.

3. Floating-board capillary cultivation: floating-board wet felt root separation technology is adopted in the cultivation bed to create an oxygen-rich environment for wet root cultivation and solve the contradiction between water and gas; The long horizontal cultivation bed stores a lot of nutrient solution.

Extended data:

Application of soilless culture

(1) Used in vegetable planting: people attach great importance to planting pollution-free green food, which is healthy and safe.

(2) Used for flower cultivation: both cut flowers and potted flowers are first suitable for soilless culture. Soilless flowers not only have large flower heads, but also have bright colors.

(3) Used to cultivate medicinal plants: Many medicinal plants are root plants, and the growth environment of roots is very critical. Soilless culture can provide a good growth environment for medicinal plants, so the planting effect is very obvious.

(4) used for fruit tree cultivation: rootstock seedlings of fruit trees cultivated in soilless culture grow rapidly and have high survival rate; Cutting and rapid propagation of fruit trees takes root quickly and has high seedling rate.

References:

Baidu encyclopedia-soilless culture